Paper Titles
Evaluation of Diesel Engine Performance and Exhaust Emission Characteristics Using Waste Cooking Oil
p.425
Review of Performance and Emmissions Characteristics of Bio-Additive Fuel on SI Engine Fuelled by Biopetrol
p.430
Influences of Intake Temperature and Bio-Petrol Fuel Temperature on SI Engine: An Overview
p.435
The Effects of Voltage Flow and pH Value in Alkaline Electrolyser System to Performance
p.440
Influence of Ag on Chemical and Thermal Compatibility of LSCF-SDCC for LT-SOFC
p.445
Effects of Nozzle Shape on the Flow Characteristics of Premix Injector Using Computational Fluid Dynamics (CFD)
p.450
The Storage Effect on Fuel Properties and Emission for Variety Biodiesel Blends
p.455
The Development of Wave Energy Conversion Device to Generate Electricity
p.460
Experimental Investigation on Ethanol-Petrol Blends Operating with a Petrol Engine: An Overview
p.465

Influence of Ag on Chemical and Thermal Compatibility of LSCF-SDCC for LT-SOFC

Article Preview
View Pdf By email

Abstract:

In addition to the good electrochemical performance criteria in solid oxide fuel cell (SOFC) applications, cathode material must match thermal expansion with other SOFC components. Thus, effects of Ag on thermal mismatch, chemical reactions, and microstructure are investigated. Ag (1 wt% to 5 wt. %) was mixed with La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF6428) and Sm-doped ceria carbonate (SDCC) composite cathode powder. LSCF6428-SDCC-Ag samples were sintered at 600 °C for 2 h. The thermal expansion coefficients (TECs), which were determined using a dilatometer, indicated relatively less TEC mismatch between LSCF-SDCC-Ag cathodes composite and SDCC electrolyte. The average TEC value obtained from 20 °C to 600 °C implied that LSCF-SDCC-A5 (5 wt. % Ag) showed better thermal matching (13.18×10−6 K−1) with SDCC electrolyte (12.84×10−6 K−1) and achieved better compatibility. The X-ray diffraction patterns indicated that the LSCF6428-SDCC-Ag peak increased with the increase in the amount of Ag. Scanning electron microscopy analysis showed that Ag was capable of maintaining the porosity that is required for cathodes (20%–40%). Results showed that Ag exhibited desirable thermal and chemical compatibility with LSCF-SDCC. Thus, LSCF6428-SDCC-Ag can be used as a composite cathode for low-temperature SOFCs.

You have full access to the following eBook
International Integrated Engineering Summit 2014 Read eBook

Info:

Periodical:

Applied Mechanics and Materials (Volumes 773-774)

Pages:

445-449

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.773-774.445

Citation:

Cite this paper

Online since:

July 2015

Authors:

Linda Agun, Muhamad Subri Abu Bakar, Sufizar Ahmad, Andanastuti Muchtar, Hamimah Abdul Rahman

Keywords:

LSCF, LT-SOFC, Silver, Thermal Expansion

Export:

RIS, BibTeX

Permissions:

Creative Commons CC BY 4.0

Share:

Citation:

References

[1] S. Choi, J. Shin, & G. Kim, The Electrochemical and Thermodynamic Characterization of PrBaCo2 − x FexO5 + δ ( x = 0, 0. 5, 1) Infiltrated into Yttria-Stabilized Zirconia Scaffold as Cathodes for Solid Oxide Fuel Cells, J. Power Sources. 201 (2012).

DOI: 10.1016/j.jpowsour.2011.09.096

Google Scholar

[2] S. Huang, G. Zhou, & Y. Xie, Electrochemical Performances of Ag–(Bi2O3)0. 75(Y2O3)0. 25 Composite Cathodes, J. Alloys and Compd. 464 (2008) 322–326.

DOI: 10.1016/j.jallcom.2007.09.111

Google Scholar

[3] J. Raharjo, Performa Elektrokimia Komposit Katoda Berbasis La0, 6Sr0, 4Co0, 2Fe0, 8O3-δ Untuk Solid Oxide Fuel Cell Bersuhu Rendah, Indonesian J. Mater. Sci. 13 (2012) 198–203.

Google Scholar

[4] Park, K., Yu, S., Bae, J., Kim, H., & Ko, Y. Fast Performance Degradation of SOFC caused by Cathode Delamination in Long-Term Testing, Int. J. Hydrogen Energy. 35 (2010) 8670–8677.

DOI: 10.1016/j.ijhydene.2010.05.005

Google Scholar

[5] Tietz, F., Mai, A., & Stöver, D. From Powder Properties to Fuel Cell Performance – A Holistic Approach for SOFC Cathode Development, Solid State Ionics. 179 (2008) 1509–1515.

DOI: 10.1016/j.ssi.2007.11.037

Google Scholar

[6] Rahman, H. A., Muchtar, A., Muhamad, N., & Abdullah, HStructure and Thermal Properties of La0. 6Sr0. 4Co0. 2Fe0. 8O3−δ–SDC Carbonate Composite Cathodes for Intermediate-to Low-Temperature Solid Oxide Fuel Cells, Ceram. Int. 38 (2012) 1571–1576.

DOI: 10.1016/j.ceramint.2011.09.043

Google Scholar

[7] Xu, Q., Huang, D., Zhang, F., Chen, W., Chen, M., & Liu, H. Structure, Electrical Conducting and Thermal Expansion Properties of La0. 6Sr0. 4Co0. 2Fe0. 8O3−δ–Ce0. 8Sm0. 2O2−δ Composite Cathodes, J. Alloys and Compd. 454 (2008) 460–465.

DOI: 10.1016/j.jallcom.2006.12.132

Google Scholar

[8] T. Suzuki, Y. Takajashi, K. Hamamoto, T, Yamaguchi, Y. Fujishiro, Low Temperature Processed Composite Cathodes for Solid-oxide fuel Cells, Int. J. Hydrogen Energy. 36 (2011) 10998–11003.

DOI: 10.1016/j.ijhydene.2011.05.155

Google Scholar

[9] Z. Wang, L. Xin, X. Zhao, Y. Qiu, Z. Zhang, O. A. Baturina & W. Li, Carbon supported Ag Nanoparticles with Different Particle Size as Cathode Catalysts for Anion Exchange Membrane Direct Glycerol Fuel Cells, Renewable Energy. 62 (2014) 556–562.

DOI: 10.1016/j.renene.2013.08.005

Google Scholar

[10] L. Zhang, L. Li, F. Zhao, F. Chen, C. Xia, Sm0. 2Ce0. 8O1. 9/Y0. 25Bi0. 75O1. 5 Bilayered Electrolytes for Low-Temperature SOFCs with Ag-Y0. 25Bi0. 75O1. 5 Composite Cathodes, Solid State Ionics. 192 (2011) 557-560.

DOI: 10.1016/j.ssi.2010.06.015

Google Scholar

[11] Da Conceição, L., Silva, A. M., Ribeiro, N. F. P., & Souza, M. M. V. M. Combustion Synthesis of La0. 7Sr0. 3Co0. 5Fe0. 5O3 (LSCF) Porous Materials for Application as Cathode in IT-SOFC, Mater. Res. Bulletin. 46 (2011) 308–314.

DOI: 10.1016/j.materresbull.2010.10.009

Google Scholar

[12] R. Su, Z. Lü, S.P. Jiang, Y. Shen, W. Su, & K. Chen, Ag Decorated (Ba, Sr)(Co, Fe)O3 Cathodes for Solid Oxide Fuel Cells Prepared by Electroless Silver Deposition, Int. J. Hydrogen Energy. 38 (2013) 2413–2420.

DOI: 10.1016/j.ijhydene.2012.11.126

Google Scholar